﻿236 Proceedings of the Royal Physical Society. 



Gainmams locu&ta (L.). Young. 

 Jcera albifrons, Leach. 

 Orthodadius {variabilis 1, Staeg). 

 Orthocladius sp. 



Spilogaster maculosa, Meig. Puparium. 



iii. In Substratum (Shingle). 



Procerodes ulvce (Oersted). 

 Enchvtrasidse. 



H^hion pellucidum (L.). A dead shell. 

 Gibbula cineraria (L.). A dead shell. 

 Littorina rudis (Maton). Dead shells. 

 Lacuna divai^icata (Fabr.). A dead shell. 

 Gammarus locusta (L.). 



ZOXE 1— LOWER HALF. 



i. Upper Surface of Stones. 



Littorina rudis (Maton). Xot numerous. 

 Balanus balanoides (L.). 50 per cent. dead. 

 Molgus littoralis (L.). 



ii. Under Surface of Stones. 

 Procerodes ulvce (Oersted). 



Littori^ia rudis (Maton). Yery abundant. 

 Balanus balanoides (L.). Small ; very abundant. 

 Joera albifrons, Leach. Abundant ; mostly females. 

 Ligia oceanica (L.). Not so abundant. 



iii. On Fucus platycai'pus. 



Yarious Nematodes. 



Rhabdoccele. 1-5 mm. 



Littorina rudis (Maton). 1 mm.: common. 



., obtusata (L.). A few. 

 Eyale nihsoni (Rathke). 

 Gamrnarus r/iarinus, Leach. 

 Jcei'a albifrons, Leach. 

 Ligia oceanica (L.). Young. 

 Ldotea granulosa, Rathke. L^p to 1 cm. 



iv. On Pelvetia canaliculata. 



Littorina rudis {^laXon). 1mm.: common. 

 Hyale nihsoni (Rathke). 



